Drivetrain Software Engineer interview questions

I had two tech rounds for a software engineering role, both focused on DSA. The first round went well. In the second, the interviewer had a lot of background noise, which made communication tough. Even though my approach was correct and acknowledged, he mentioned I wasn’t meeting the bar and ended the call about 20 minutes early. I respect that interviews are meant to assess skill, but ending the round abruptly on one non-trivial question without exploring further felt unfair. A bit more patience and structure would make the process feel a lot more professional and candidate-friendly.

3 technical rounds, 1 hiring manager round and a hr round. i have cleared the first interview. first round was pretty chill there are there variations for the question it is around recursion. in the 2nd round it started with a dsa question basing on the 01 knapsack it took 30 mins to understand, clarifying questions, brute force and optimal solution implementation. 25 more mins left then interviewer stated to design low level design and high level design of a movie/concert booking app. i was trying to bound the problem statement but interviewer kept on increasing the scope of question which made almost impossible to complete in the given time bound.